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Finding the Fourth Proportional to 511,764.97, 766,889.30 and 207,789.49

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Solution

The fourth proportional to 511,764.97, 766,889.30 and 207,789.49 is: 311,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,764.97 : 766,889.30 = 207,789.49 : x
  2. Step 2: Convert to fraction form
    511,764.97/766,889.30 = 207,789.49/x
  3. Step 3: Cross multiply
    511,764.97x = 766,889.30 × 207,789.49
  4. Step 4: Simplify right side
    511,764.97x = 159,351,536,533.46
  5. Step 5: Solve for x
    x = 159,351,536,533.46/511,764.97
  6. Step 6: Final answer
    x = 311,376.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.